Stadium: Court 2 Round: 26
| ITF Vietnam F5 | 2018/10/30 06:00 | Niki Kaliyanda Poonacha v Cheng-Yu Yu | 6-3,3-6,5-7 |
| ITF Vietnam F4 | 2018/10/22 02:30 | Cheng-Yu Yu v Arthur Weber | 6-1,2-6,6-7 |
| ITF Vietnam F4 | 2018/10/21 06:00 | Cheng-Yu Yu v Ha Minh Duc Vu | 6-1,6-0 |
| ITF Thailand F6 | 2018/10/08 03:30 | Cheng-Yu Yu v Wei-De Lin | 6-7,2-6 |
| ITF Thailand F5 | 2018/10/03 04:55 | Cheng-Yu Yu v Felix Corwin | 3-6,3-6 |
| Challenger Kaohsiung | 2018/09/15 05:20 | Soonwoo Kwon v Cheng-Yu Yu | 6-2,6-4 |
| ITF Chinese Taipei F2 | 2018/07/24 03:30 | Cheng-Yu Yu v Yuta Kawahashi | 7-6,1-6,2-6 |
| ITF Chinese Taipei F1 | 2018/07/18 02:00 | Nicholas S. Hu v Cheng-Yu Yu | 7-6,6-7,6-4 |
| ITF Vietnam F5 | 2018/10/30 04:35 | Karl Friberg v Goran Markovic | 6-3,6-2 |
| ITF Vietnam F4 | 2018/10/23 05:30 | Karl Friberg v Filip Bergevi | 3-6,2-6 |
| ATP Stockholm | 2018/10/14 13:55 | Peter Polansky v Karl Friberg | 6-4,6-1 |
| ITF Sweden F5 | 2018/10/01 14:00 | Karl Friberg v Otto Virtanen | 3-6,7-5,1-6 |
| ITF Sweden F4 | 2018/09/25 11:00 | Karl Friberg v Otto Virtanen | 6-1,5-7,0-6 |
| ITF Great Britain F5 | 2018/09/18 11:40 | Karl Friberg v Aidan Mchugh | 6-4,4-6,6-7 |
| ITF Great Britain F4 | 2018/09/12 12:05 | Jack Draper v Karl Friberg | 6-3,6-4 |
| ITF Great Britain F4 | 2018/09/11 13:00 | Robert Carter v Karl Friberg | 6-7,3-6 |